'
' DotNetNuke - http://www.dotnetnuke.com
' Copyright (c) 2002-2009
' by DotNetNuke Corporation
'
' Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated 
' documentation files (the "Software"), to deal in the Software without restriction, including without limitation 
' the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and 
' to permit persons to whom the Software is furnished to do so, subject to the following conditions:
'
' The above copyright notice and this permission notice shall be included in all copies or substantial portions 
' of the Software.
'
' THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED 
' TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 
' THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF 
' CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
' DEALINGS IN THE SOFTWARE.
'

Imports System
Imports DotNetNuke

Namespace DotNetNuke.Modules.UsersOnline

    Public MustInherit Class DataProvider

#Region "Shared/Static Methods"

        ' singleton reference to the instantiated object 
        Private Shared objProvider As DataProvider = Nothing

        ' constructor
        Shared Sub New()
            CreateProvider()
        End Sub

        ' dynamically create provider
        Private Shared Sub CreateProvider()
            objProvider = CType(Framework.Reflection.CreateObject("data", "DotNetNuke.Modules.UsersOnline", "DotNetNuke.Modules.UsersOnline"), DataProvider)
        End Sub

        ' return the provider
        Public Shared Shadows Function Instance() As DataProvider
            Return objProvider
        End Function

#End Region

#Region "Abstract methods"


        ' all core methods defined below
        Public MustOverride Function GetStatistics(ByVal PortalId As Integer, ByVal IncludeHosts As Boolean) As Hashtable
        Public MustOverride Function GetOnlineUsers(ByVal PortalId As Integer, ByVal IncludeHosts As Boolean) As IDataReader

#End Region

    End Class

End Namespace